Quote: I still can't get over what 1/12 of a turn on the metering screws will do to the A/F ratio. If I turn all four of mine from 11:00 to 12:00 positions (for reference), this could be .5 difference on my guage.
That would normally be a hint that you need smaller IFRs/larger IABs, but I think you've proven they produce other problems. It is a pain to have mixture screws that are so sensitive, yes?
Quote: .028" IFR's to .031" IFR's showed a 1.4 to a full 2.0 change in my cruising A/F ratio at the same speeds. .075" IAB's to .071" IAB's showed .4 to .6 change in my cruising A/F at the same speeds.
Just goes to show how much the idle and (mostly) the t-slots are working at cruise. That's really not good, because those circuits are dependent on manifold vacuum, not airflow. But you're making it work! Good job!
